Assigtnor to combustion engineer



Nov. 9 1926. 1,606,315

J. MORRIS FURNACE ARCH Filed Jan. 9, 1920 2 Sheets-Sheet 1 FIGJ.

WITNESSES Invasion Nov. 9, 1926. 1,606,3i5 J. MORRIS FURNACE ARCH FiledJan. 9,. 1920 2 Sheets-Sheet 2 FIBA'.

- w vide for or uneven, o the arch bricks when alternate- -h Patented,Nov. 9, 1926.

- a STATES i JOB-"N MORRIS, OF BAYONNE, NEW JERSEY, ASSIGNOR TCOMBUSTION ENGINEER- I me conronarron, a oonrona'rron I summon Anon.

.OF NEW YORK.

Application filed January 9; i920. Serial No. 380,301.

My invention relates tofurnaces and articularly to furnace archconstruction. he .usual, sprun ty e of furnace arch must be built by sed ricklayers, is rigid and integral when completed and rovides noadequate means for accommo ating expansion and contraction due tovariations 1n temerature. Its weight is so carried to the mace walls,WhlCh form the arch abut- 10 'ments, that bracin means for the latterare necessary. If the ricks used in the arch are capable of furthershrinkage and the operatmg heat of the furnace is sufiicient to producesame, arch failure is a likely result. Aside from these disadvantages,the sprung arch is not eflicient-because it deflects the heat gases fromanuniform distribution to tliifimiler tubes. A flat arch is the most 7practical remedy for this defect.

e main object of my invention is to avoid the concave undersurfaee ofsprung arches. Another objectis to eliminate the buckstays and tie rods-in arch .sup wall construction. Another object 1s to conas struct afurnace arch so that any tile or brick may be removed for replacement orother purpose without materially disturbing the arch and, if necessary,while the furnace isin operation. Another object is to proansion andcontraction, even 1y heated or cooled.

In the acompanying drawings, illustrating 'my invention, Figure 1. is a101i 'tudmal, vertical section thru a flat arch o my construction asapplied to a boiler equipped with a common form-of stoker; Fig. 2 1s atransverse, vertical section, the left hand side of which is taken online 2-2 of Fig. 1 and 4.0, the right hand side of which is takenon theline H of Fig. 1, the planes of the sections bein located so as to showthe arch-forming briefs inelevation; Fig. 3.is a side elevation ofseveral ad'acent bricks and a section of their suspen element, and Fig.4- is a partial section, corresponding to sections shown in Fig; 2 butshowing a modified construction of bricks.

The bricks composing my arch are of two so difi'erent A and B. Whileindividuals of .eac typefmay vary in size and shape, all of type A br1ckare adapted o support those of type B. Each type A bridk is preferablyprovided with a hanger for as suspension from an overhead beam and eachthe lower portion of each of the bricks may type B brick is adapted toengage adjacent type A bucks to be supported thereby.

My arch is sus ended from beams 2 supported on the si e walls 3 of thefurnace. A preferred section for beams 2 is shown in Fig. 3 and consistsof an I shape having a central depending flange 4. Type A bricks aresuspended from beams 2 by hanger members 5 which have a body portion, Cshaped in section and resembling a hollow cylinder with a longitudinalopening in its side extending from end to end. At right angles to theaxis of this cylindrical body portion and opposite the longitudinalopening, is an Integral, clevis like portion adapted to admit flange 4of beam 2 and to be pivotally secured thereto by a bolt 6.

The depth and width and the contour of vary to suit differentrequirements but tops of same are provided with uniform knobs 7. Eachknob 7 is substantially cylindrical with a diameter less than the insidediameter of the cylindrical body of hanger 5 but exceeding the width ofthe longitudinal opening therein and this cylindrical portion of knob 7is united to the body of the brick by a comparatively 'narow shank 8thethickness of which is less than the width of the hanger opening.Bricks A may be' assembled with, angers 5 by alining knob 7 with thehanger body and sliding the former into the latter.

Alternate, horizontal courses of the arch are com osed of a plurality ofbricks A, each suspen ed from a beam 2 by an individual hanger 5. Theleft hand side of Fig. 2 illustrates such a course. The intermediatecoursesare composed of a series of bricks B with their supportingflanges B overlapping the tops of bricks A. The right hand side of Fig.2 shows such a course.

After bricks A are assembled with theirrespective hangers by relativelateral movement transversely of the row, bricks B are lowered intoplace with flanges. B engaging the tops of bricks A. The beveled orrecessed portions 9 of ad-. jacent bricks in the same course cooperateto form a channel adapted to receive fireclay or'other sealing material.The overlapping flanges ,of bricks B seal the crevices between adjoiningbricks in adjacent courses. The freedom of each brick to swing sli htlyupon its pivotal support and the di erence in diameter of knob 7and. theinterior of hang- 7 ing er 5 provide ample room for expansion of thebrick. It will be noted that rails 2 and hangers 5, obviously of metal,are not enclosed by the arch bricks and the air outside the furnace cancirculate freely around these metal parts and prevent their being heatedto a deteriorating temperature. The entire weight of the arch istransferred to the walls 3 as a vertical load so that the walls need nolateral bracing.

Fig. 1 shows angles 10 secured to the side of beams 2 with thehorizontal flange of each angle supporting adjacent B of a course oftype B bricks. This avoids manufacture of a brickhavingroffset flangesto accommodate the stepped construction desired at this part of thearch.

Fig. 4 shows a modified form of arch in which the bricks are providedwith projecting abutting faces 11 which act as spacmeans for maintainingthe major portion of each brick in spaced relation to the adjacentbricks. This provides, for lateral expansion of theybricks under theheat of the furnace.

Any type B brick may be removed by gripping its knob 7 with a suitabletool and lifting it from'the arch. Any type A brick may be removed byfirst removing the two adjacenttype B bricks which it is supporting andsliding-it horizontally, so as to disengage its respective hanger 5, andthen lifting it from the arch. Or its bolt 6 may be withdrawn and thehanger and brick removed together.

I claim 1.' In a furnace arch, an overhead structure, a plurality ofrows of hollow cylindrical brackets depending therefrom, a pluralit ofrows of bricks each having a cylindrical extension adapted to be looselyreceived in one of said hollow brackets so as to permit relativemovement of said bricks thereto, intermediate rows of shouldered brickssupported on said first named bricks and a projection on each of saidshouldered bricks for permitting removal thereof from the arch duringoperation of the furnace.

. 2. A furnace including an overhead structure, means for loosely suporting a .plurality' of bricks therefrom or free vertical movementrelatively thereto and abutting shoulders on each of said bricks formaintaining the major portions of the adjacent bricks in spaced relationwith respect to each other so as to permit lateral expansion thereof.

3. In a furnace arch, an overhead structure, a plurality of rowsofbricks, means for supporting alternate rows thereof from said overheadstructure, means for supporting the bricks of the intermediate rows onthe bricks of said alternate rows and means on said overhead structurefor supporting one side of the bricks in an intermediate row adjacentthe side of the arch.

4. In a furnace arch,'an overhead structure, a plurality of rows ofbricks, means for supporting alternate rows from said overheadstructure, shoulders on the bricks of the intermediate rows forsupporting said bricks on the bricks of said alternate rows and means onsaid overhead structure for supporting the shoulders on one side of thebricks in an intermediate row adjacent the side of the arch.

In testimony whereof, I have hereunto subscribed my hand this 30th dayof December, 1919.

J OHN MORRIS-1

